Happy New Year to all.
New user first post. I have been using the software for a month now and I am very pleased and impressed with it. A very good value for the money. ( I bought it last week )
My machine is a DIY, I am running GRBL on a CNC shield. 3-axis with a 250mm sq. envelope and about 50mm in Z.
My question is why won’t “Focus Test” accept negative numbers ?
I come from the machine tool world where everything is “negative” from the “homed” machine coordinates. So my standard procedure would be to set zero at the top of the work.
So in my head I would go to what I think is about the right focus, take Z up a little bit, and do the Z focus test starting at zero and go to Z-3mm or so.
I imagine I could start below zero and work up but that really seems backwards to me.
I have read some other posts about Ruida controllers not allowing negative numbers but GRBL does and lightburn is OK with that , just not the focus test.
Any help will be greatly appreciated.